Struct ExecutionLimits

pub struct ExecutionLimits {
    pub max_loop_iterations_per_bar: u64,
    pub max_security_depth: usize,
    pub max_security_calls: usize,
}

Configures runtime execution limits for the VM.

These limits protect against runaway scripts (e.g. infinite loops) that could otherwise hang the host process. All limits are enforced per bar (each call to Instance::run() resets the counters).

Examples

use openpine_vm::ExecutionLimits;

// Use defaults (500 000 loop iterations per bar)
let limits = ExecutionLimits::default();
assert_eq!(limits.max_loop_iterations_per_bar, 500_000);

// Custom limits
let limits = ExecutionLimits::default().with_max_loop_iterations_per_bar(1_000_000);

Fields

max_loop_iterations_per_bar: u64

Maximum total loop iterations allowed per bar.

All for, while, and for..in loops share this budget within a single bar execution. When the limit is reached the VM raises a runtime error.

Set to u64::MAX to effectively disable the limit.

max_security_depth: usize

Maximum nesting depth for request.security() calls.

The main chart has depth 0; each nested request.security() expression increments the depth by one. A depth limit of 3 means a security expression can itself call request.security() up to two more levels.

Set to 0 to completely disable request.security().

max_security_calls: usize

Maximum number of unique (symbol, timeframe) streams for request.security() calls.

Multiple call sites that request the same (symbol, timeframe) pair share a single stream and count as one toward this limit.

Set to 0 to completely disable request.security().

Implementations

impl ExecutionLimits

pub const fn with_max_loop_iterations_per_bar(self, value: u64) -> Self

Sets the maximum number of loop iterations allowed per bar.

pub const fn with_max_security_depth(self, value: usize) -> Self

Sets the maximum request.security() nesting depth.

pub const fn with_max_security_calls(self, value: usize) -> Self

Sets the maximum number of unique (symbol, timeframe) streams.

Trait Implementations

impl Clone for ExecutionLimits

fn clone(&self) -> ExecutionLimits

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExecutionLimits

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ExecutionLimits

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ExecutionLimits

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ExecutionLimits

fn eq(&self, other: &ExecutionLimits) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ExecutionLimits

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ExecutionLimits

impl Eq for ExecutionLimits

impl StructuralPartialEq for ExecutionLimits